diff --git a/src/publish.rs b/src/publish.rs
index 8c9725d..3760e4f 100644
--- a/src/publish.rs
+++ b/src/publish.rs
@@ -323,11 +323,15 @@ pub async fn receive_url_collector_data(recv: &mut RecvStream) -> Result<Vec<u8>
     let mut ts_buf = [0; std::mem::size_of::<u64>()];
     frame::recv_bytes(recv, &mut ts_buf).await?;
 
+    let mut source_buf = Vec::new();
+    frame::recv_raw(recv, &mut source_buf).await?;
+
     let mut record_buf = Vec::new();
     frame::recv_raw(recv, &mut record_buf).await?;
 
     let mut result_buf: Vec<u8> = Vec::new();
     result_buf.extend_from_slice(&ts_buf);
+    result_buf.extend_from_slice(&source_buf);
     result_buf.extend_from_slice(&record_buf);
 
     Ok(result_buf)
@@ -699,9 +703,13 @@ mod tests {
             post_body: Vec::new(),
         };
         let raw_event = bincode::serialize(&http).unwrap();
+        let source = bincode::serialize(&"hello").unwrap();
         let raw_len = u32::try_from(raw_event.len()).unwrap().to_le_bytes();
+        let source_len = u32::try_from(source.len()).unwrap().to_le_bytes();
         let mut send_buf: Vec<u8> = Vec::new();
         send_buf.extend_from_slice(&6666_i64.to_le_bytes());
+        send_buf.extend_from_slice(&source_len);
+        send_buf.extend_from_slice(&source);
         send_buf.extend_from_slice(&raw_len);
         send_buf.extend_from_slice(&raw_event);
         send_bytes(&mut channel.server.send, &mut send_buf)
@@ -713,6 +721,7 @@ mod tests {
             .unwrap();
         let mut result_buf: Vec<u8> = Vec::new();
         result_buf.extend_from_slice(&6666_i64.to_le_bytes());
+        result_buf.extend_from_slice(&source);
         result_buf.extend_from_slice(&raw_event);
         assert_eq!(data, result_buf);